DrvAudioVRDE.cpp@ 73471

最後變更在這個檔案從73471是 73464,由 vboxsync 提交於 7 年前
Audio/VRDE: Fixed setting the shift parameter of the acquired stream configuration in vrdeCreateStreamIn().
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
檔案大小: 25.5 KB

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1	/* $Id: DrvAudioVRDE.cpp 73464 2018-08-03 09:34:01Z vboxsync $ */
2	/** @file
3	* VRDE audio backend for Main.
4	*/
5
6	/*
7	* Copyright (C) 2013-2018 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
23	#include "LoggingNew.h"
24
25	#include <VBox/log.h>
26	#include "DrvAudioVRDE.h"
27	#include "ConsoleImpl.h"
28	#include "ConsoleVRDPServer.h"
29
30	#include "../../Devices/Audio/DrvAudio.h"
31
32	#include <iprt/mem.h>
33	#include <iprt/cdefs.h>
34	#include <iprt/circbuf.h>
35
36	#include <VBox/vmm/pdmaudioifs.h>
37	#include <VBox/vmm/pdmdrv.h>
38	#include <VBox/RemoteDesktop/VRDE.h>
39	#include <VBox/vmm/cfgm.h>
40	#include <VBox/err.h>
41
42
43	/*********************************************************************************************************************************
44	* Structures and Typedefs *
45	*********************************************************************************************************************************/
46	/**
47	* Audio VRDE driver instance data.
48	*/
49	typedef struct DRVAUDIOVRDE
50	{
51	/** Pointer to audio VRDE object. */
52	AudioVRDE *pAudioVRDE;
53	/** Pointer to the driver instance structure. */
54	PPDMDRVINS pDrvIns;
55	/** Pointer to host audio interface. */
56	PDMIHOSTAUDIO IHostAudio;
57	/** Pointer to the VRDP's console object. */
58	ConsoleVRDPServer *pConsoleVRDPServer;
59	/** Pointer to the DrvAudio port interface that is above us. */
60	PPDMIAUDIOCONNECTOR pDrvAudio;
61	/** Number of connected clients to this VRDE instance. */
62	uint32_t cClients;
63	} DRVAUDIOVRDE, *PDRVAUDIOVRDE;
64
65	typedef struct VRDESTREAM
66	{
67	/** The stream's acquired configuration. */
68	PPDMAUDIOSTREAMCFG pCfg;
69	union
70	{
71	struct
72	{
73	/** Circular buffer for holding the recorded audio frames from the host. */
74	PRTCIRCBUF pCircBuf;
75	} In;
76	};
77	} VRDESTREAM, *PVRDESTREAM;
78
79	/* Sanity. */
80	AssertCompileSize(PDMAUDIOFRAME, sizeof(int64_t) * 2 /* st_sample_t using by VRDP server */);
81
82	static int vrdeCreateStreamIn(PVRDESTREAM pStreamVRDE, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
83	{
84	RT_NOREF(pCfgReq);
85	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
86
87	pCfgAcq->Props.uHz = 22050; /* The VRDP server's internal frequency. */
88	pCfgAcq->Props.cChannels = 2;
89	pCfgAcq->Props.cBits = 16;
90	pCfgAcq->Props.fSigned = true;
91	pCfgAcq->Props.fSwapEndian = false;
92	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBits, pCfgAcq->Props.cChannels);
93
94	/* According to the VRDP docs, the VRDP server stores audio in 200ms chunks. */
95	const uint32_t cfVRDPServer = DrvAudioHlpMilliToFrames(200 /* ms */, &pCfgAcq->Props);
96
97	int rc = RTCircBufCreate(&pStreamVRDE->In.pCircBuf, DrvAudioHlpFramesToBytes(cfVRDPServer, &pCfgAcq->Props));
98	if (RT_SUCCESS(rc))
99	{
100	/*
101	* Because of historical reasons the VRDP server operates on st_sample_t structures internally,
102	* which is 2 * int64_t for left/right (stereo) channels.
103	*
104	* As the audio connector also uses this format, set the layout to "raw" and just let pass through
105	* the data without any layout modification needed.
106	*/
107	pCfgAcq->enmLayout = PDMAUDIOSTREAMLAYOUT_RAW;
108
109	pCfgAcq->Backend.cfPeriod = cfVRDPServer;
110	pCfgAcq->Backend.cfBufferSize = pCfgAcq->Backend.cfPeriod * 2; /* Use "double buffering". */
111	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfPeriod;
112	}
113
114	return rc;
115	}
116
117
118	static int vrdeCreateStreamOut(PVRDESTREAM pStreamVRDE, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
119	{
120	RT_NOREF(pStreamVRDE, pCfgReq);
121
122	if (pCfgAcq)
123	{
124	/*
125	* Because of historical reasons the VRDP server operates on st_sample_t structures internally,
126	* which is 2 * int64_t for left/right (stereo) channels.
127	*
128	* As the audio connector also uses this format, set the layout to "raw" and just let pass through
129	* the data without any layout modification needed.
130	*/
131	pCfgAcq->enmLayout = PDMAUDIOSTREAMLAYOUT_RAW;
132
133	pCfgAcq->Props.uHz = 22050; /* The VRDP server's internal frequency. */
134	pCfgAcq->Props.cChannels = 2;
135	pCfgAcq->Props.cBits = 16;
136	pCfgAcq->Props.fSigned = true;
137	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBits, pCfgAcq->Props.cChannels);
138
139	/* According to the VRDP docs, the VRDP server stores audio in 200ms chunks. */
140	pCfgAcq->Backend.cfPeriod = DrvAudioHlpMilliToFrames(10 /* ms */, &pCfgAcq->Props);
141	pCfgAcq->Backend.cfBufferSize = DrvAudioHlpMilliToFrames(200 /* ms */, &pCfgAcq->Props);
142	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfBufferSize;
143	}
144
145	return VINF_SUCCESS;
146	}
147
148
149	static int vrdeControlStreamOut(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE, PDMAUDIOSTREAMCMD enmStreamCmd)
150	{
151	RT_NOREF(pDrv, pStreamVRDE, enmStreamCmd);
152
153	LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
154
155	return VINF_SUCCESS;
156	}
157
158
159	static int vrdeControlStreamIn(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE, PDMAUDIOSTREAMCMD enmStreamCmd)
160	{
161	LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
162
163	if (!pDrv->pConsoleVRDPServer)
164	return VINF_SUCCESS;
165
166	int rc;
167
168	/* Initialize only if not already done. */
169	switch (enmStreamCmd)
170	{
171	case PDMAUDIOSTREAMCMD_ENABLE:
172	{
173	rc = pDrv->pConsoleVRDPServer->SendAudioInputBegin(NULL, pStreamVRDE,
174	DrvAudioHlpMilliToFrames(200 /* ms */, &pStreamVRDE->pCfg->Props),
175	pStreamVRDE->pCfg->Props.uHz, pStreamVRDE->pCfg->Props.cChannels,
176	pStreamVRDE->pCfg->Props.cBits);
177	if (rc == VERR_NOT_SUPPORTED)
178	{
179	LogFunc(("No RDP client connected, so no input recording supported\n"));
180	rc = VINF_SUCCESS;
181	}
182
183	break;
184	}
185
186	case PDMAUDIOSTREAMCMD_DISABLE:
187	{
188	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL /* pvUserCtx */);
189	rc = VINF_SUCCESS;
190
191	break;
192	}
193
194	case PDMAUDIOSTREAMCMD_PAUSE:
195	{
196	rc = VINF_SUCCESS;
197	break;
198	}
199
200	case PDMAUDIOSTREAMCMD_RESUME:
201	{
202	rc = VINF_SUCCESS;
203	break;
204	}
205
206	default:
207	{
208	rc = VERR_NOT_SUPPORTED;
209	break;
210	}
211	}
212
213	if (RT_FAILURE(rc))
214	LogFunc(("Failed with %Rrc\n", rc));
215
216	return rc;
217	}
218
219
220	/**
221	* @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
222	*/
223	static DECLCALLBACK(int) drvAudioVRDEInit(PPDMIHOSTAUDIO pInterface)
224	{
225	RT_NOREF(pInterface);
226	LogFlowFuncEnter();
227
228	return VINF_SUCCESS;
229	}
230
231
232	/**
233	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
234	*/
235	static DECLCALLBACK(int) drvAudioVRDEStreamCapture(PPDMIHOSTAUDIO pInterface,
236	PPDMAUDIOBACKENDSTREAM pStream, void pvBuf, uint32_t cxBuf, uint32_t pcxRead)
237	{
238	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
239	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
240	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
241	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
242	/* pcxRead is optional. */
243
244	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
245
246	size_t cbData = 0;
247
248	if (RTCircBufUsed(pStreamVRDE->In.pCircBuf))
249	{
250	void *pvData;
251
252	RTCircBufAcquireReadBlock(pStreamVRDE->In.pCircBuf, cxBuf, &pvData, &cbData);
253
254	if (cbData)
255	memcpy(pvBuf, pvData, cbData);
256
257	RTCircBufReleaseReadBlock(pStreamVRDE->In.pCircBuf, cbData);
258	}
259
260	if (pcxRead)
261	*pcxRead = (uint32_t)cbData;
262
263	return VINF_SUCCESS;
264	}
265
266
267	/**
268	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
269	*/
270	static DECLCALLBACK(int) drvAudioVRDEStreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
271	const void pvBuf, uint32_t cxBuf, uint32_t pcxWritten)
272	{
273	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
274	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
275	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
276	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
277	/* pcxWritten is optional. */
278
279	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
280	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
281
282	if (!pDrv->pConsoleVRDPServer)
283	return VERR_NOT_AVAILABLE;
284
285	/* Note: We get the number of frames in cxBuf
286	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout) on stream creation. */
287	uint32_t cfLive = cxBuf;
288
289	PPDMAUDIOPCMPROPS pProps = &pStreamVRDE->pCfg->Props;
290
291	VRDEAUDIOFORMAT format = VRDE_AUDIO_FMT_MAKE(pProps->uHz,
292	pProps->cChannels,
293	pProps->cBits,
294	pProps->fSigned);
295
296	/* Use the internal counter to track if we (still) can write to the VRDP server
297	* or if we need to wait another round (time slot). */
298	uint32_t cfToWrite = cfLive;
299
300	Log3Func(("cfLive=%RU32, cfToWrite=%RU32\n", cfLive, cfToWrite));
301
302	/* Don't play more than available. */
303	if (cfToWrite > cfLive)
304	cfToWrite = cfLive;
305
306	int rc = VINF_SUCCESS;
307
308	PPDMAUDIOFRAME paSampleBuf = (PPDMAUDIOFRAME)pvBuf;
309	AssertPtr(paSampleBuf);
310
311	/*
312	* Call the VRDP server with the data.
313	*/
314	uint32_t cfWritten = 0;
315	while (cfToWrite)
316	{
317	uint32_t cfChunk = cfToWrite; /** @todo For now write all at once. */
318
319	if (!cfChunk) /* Nothing to send. Bail out. */
320	break;
321
322	/* Note: The VRDP server expects int64_t samples per channel, regardless of the actual
323	* sample bits (e.g 8 or 16 bits). */
324	pDrv->pConsoleVRDPServer->SendAudioSamples(paSampleBuf + cfWritten, cfChunk /* Frames */, format);
325
326	cfWritten += cfChunk;
327	Assert(cfWritten <= cfLive);
328
329	Assert(cfToWrite >= cfChunk);
330	cfToWrite -= cfChunk;
331	}
332
333	if (RT_SUCCESS(rc))
334	{
335	/* Return frames instead of bytes here
336	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
337	if (pcxWritten)
338	*pcxWritten = cfWritten;
339	}
340
341	return rc;
342	}
343
344
345	static int vrdeDestroyStreamIn(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE)
346	{
347	if (pDrv->pConsoleVRDPServer)
348	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL);
349
350	if (pStreamVRDE->In.pCircBuf)
351	{
352	RTCircBufDestroy(pStreamVRDE->In.pCircBuf);
353	pStreamVRDE->In.pCircBuf = NULL;
354	}
355
356	return VINF_SUCCESS;
357	}
358
359
360	static int vrdeDestroyStreamOut(PDRVAUDIOVRDE pDrv, PVRDESTREAM pStreamVRDE)
361	{
362	RT_NOREF(pDrv, pStreamVRDE);
363
364	return VINF_SUCCESS;
365	}
366
367
368	/**
369	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
370	*/
371	static DECLCALLBACK(int) drvAudioVRDEGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
372	{
373	RT_NOREF(pInterface);
374	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
375
376	pBackendCfg->cbStreamOut = sizeof(VRDESTREAM);
377	pBackendCfg->cbStreamIn = sizeof(VRDESTREAM);
378	pBackendCfg->cMaxStreamsIn = UINT32_MAX;
379	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
380
381	return VINF_SUCCESS;
382	}
383
384
385	/**
386	* @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
387	*/
388	static DECLCALLBACK(void) drvAudioVRDEShutdown(PPDMIHOSTAUDIO pInterface)
389	{
390	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
391	AssertPtrReturnVoid(pDrv);
392
393	if (pDrv->pConsoleVRDPServer)
394	pDrv->pConsoleVRDPServer->SendAudioInputEnd(NULL);
395	}
396
397
398	/**
399	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
400	*/
401	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVRDEGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
402	{
403	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
404	AssertPtrReturn(pDrv, PDMAUDIOBACKENDSTS_ERROR);
405
406	RT_NOREF(enmDir);
407
408	if (pDrv->cClients) /* If any clients are connected via VRDE, return the backend as being operational. */
409	return PDMAUDIOBACKENDSTS_RUNNING;
410
411	return PDMAUDIOBACKENDSTS_STOPPED;
412	}
413
414
415	/**
416	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
417	*/
418	static DECLCALLBACK(int) drvAudioVRDEStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
419	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
420	{
421	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
422	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
423	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
424	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
425
426	RT_NOREF(pInterface);
427
428	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
429
430	int rc;
431	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
432	rc = vrdeCreateStreamIn (pStreamVRDE, pCfgReq, pCfgAcq);
433	else
434	rc = vrdeCreateStreamOut(pStreamVRDE, pCfgReq, pCfgAcq);
435
436	if (RT_SUCCESS(rc))
437	{
438	pStreamVRDE->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq);
439	if (!pStreamVRDE->pCfg)
440	rc = VERR_NO_MEMORY;
441	}
442
443	return rc;
444	}
445
446
447	/**
448	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
449	*/
450	static DECLCALLBACK(int) drvAudioVRDEStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
451	{
452	RT_NOREF(pInterface);
453	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
454
455	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
456	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
457
458	if (!pStreamVRDE->pCfg) /* Not (yet) configured? Skip. */
459	return VINF_SUCCESS;
460
461	int rc;
462	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
463	rc = vrdeDestroyStreamIn(pDrv, pStreamVRDE);
464	else
465	rc = vrdeDestroyStreamOut(pDrv, pStreamVRDE);
466
467	if (RT_SUCCESS(rc))
468	{
469	DrvAudioHlpStreamCfgFree(pStreamVRDE->pCfg);
470	pStreamVRDE->pCfg = NULL;
471	}
472
473	return rc;
474	}
475
476
477	/**
478	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
479	*/
480	static DECLCALLBACK(int) drvAudioVRDEStreamControl(PPDMIHOSTAUDIO pInterface,
481	PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
482	{
483	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
484	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
485
486	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
487	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
488
489	if (!pStreamVRDE->pCfg) /* Not (yet) configured? Skip. */
490	return VINF_SUCCESS;
491
492	int rc;
493	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
494	rc = vrdeControlStreamIn(pDrv, pStreamVRDE, enmStreamCmd);
495	else
496	rc = vrdeControlStreamOut(pDrv, pStreamVRDE, enmStreamCmd);
497
498	return rc;
499	}
500
501
502	/**
503	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
504	*/
505	static DECLCALLBACK(uint32_t) drvAudioVRDEStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
506	{
507	RT_NOREF(pInterface);
508
509	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
510
511	if (pStreamVRDE->pCfg->enmDir == PDMAUDIODIR_IN)
512	{
513	/* Return frames instead of bytes here
514	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
515	return (uint32_t)PDMAUDIOSTREAMCFG_B2F(pStreamVRDE->pCfg, RTCircBufUsed(pStreamVRDE->In.pCircBuf));
516	}
517
518	return 0;
519	}
520
521
522	/**
523	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
524	*/
525	static DECLCALLBACK(uint32_t) drvAudioVRDEStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
526	{
527	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
528	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pStream;
529
530	PPDMAUDIOPCMPROPS pProps = &pStreamVRDE->pCfg->Props;
531
532	RT_NOREF(pDrv, pProps);
533
534	/* Return frames instead of bytes here
535	* (since we specified PDMAUDIOSTREAMLAYOUT_RAW as the audio data layout). */
536	if (pDrv->cClients)
537	return _16K; /** @todo Find some sane value here. We probably need a VRDE API VRDE to specify this. */
538
539	return 0;
540	}
541
542
543	/**
544	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
545	*/
546	static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvAudioVRDEStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
547	{
548	PDRVAUDIOVRDE pDrv = RT_FROM_MEMBER(pInterface, DRVAUDIOVRDE, IHostAudio);
549	RT_NOREF(pStream);
550
551	PDMAUDIOSTREAMSTS streamSts = PDMAUDIOSTREAMSTS_FLAG_INITIALIZED;
552
553	if (pDrv->cClients) /* If any clients are connected, flag the stream as enabled. */
554	streamSts \|= PDMAUDIOSTREAMSTS_FLAG_ENABLED;
555
556	return streamSts;
557	}
558
559
560	/**
561	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
562	*/
563	static DECLCALLBACK(int) drvAudioVRDEStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
564	{
565	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
566	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
567
568	/* Nothing to do here for VRDE. */
569	return VINF_SUCCESS;
570	}
571
572
573	/**
574	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
575	*/
576	static DECLCALLBACK(void ) drvAudioVRDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
577	{
578	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
579	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
580
581	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
582	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
583	return NULL;
584	}
585
586
587	AudioVRDE::AudioVRDE(Console *pConsole)
588	: AudioDriver(pConsole)
589	, mpDrv(NULL)
590	{
591	}
592
593
594	AudioVRDE::~AudioVRDE(void)
595	{
596	if (mpDrv)
597	{
598	mpDrv->pAudioVRDE = NULL;
599	mpDrv = NULL;
600	}
601	}
602
603
604	/**
605	* @copydoc AudioDriver::configureDriver
606	*/
607	int AudioVRDE::configureDriver(PCFGMNODE pLunCfg)
608	{
609	CFGMR3InsertInteger(pLunCfg, "Object", (uintptr_t)this);
610	CFGMR3InsertInteger(pLunCfg, "ObjectVRDPServer", (uintptr_t)mpConsole->i_consoleVRDPServer());
611
612	return VINF_SUCCESS;
613	}
614
615
616	void AudioVRDE::onVRDEClientConnect(uint32_t uClientID)
617	{
618	RT_NOREF(uClientID);
619
620	LogRel2(("Audio: VRDE client connected\n"));
621	mpDrv->cClients++;
622	}
623
624
625	void AudioVRDE::onVRDEClientDisconnect(uint32_t uClientID)
626	{
627	RT_NOREF(uClientID);
628
629	LogRel2(("Audio: VRDE client disconnected\n"));
630	Assert(mpDrv->cClients);
631	mpDrv->cClients--;
632	}
633
634
635	int AudioVRDE::onVRDEControl(bool fEnable, uint32_t uFlags)
636	{
637	RT_NOREF(fEnable, uFlags);
638	LogFlowThisFunc(("fEnable=%RTbool, uFlags=0x%x\n", fEnable, uFlags));
639
640	if (mpDrv == NULL)
641	return VERR_INVALID_STATE;
642
643	return VINF_SUCCESS; /* Never veto. */
644	}
645
646
647	/**
648	* Marks the beginning of sending captured audio data from a connected
649	* RDP client.
650	*
651	* @return IPRT status code.
652	* @param pvContext The context; in this case a pointer to a
653	* VRDESTREAMIN structure.
654	* @param pVRDEAudioBegin Pointer to a VRDEAUDIOINBEGIN structure.
655	*/
656	int AudioVRDE::onVRDEInputBegin(void *pvContext, PVRDEAUDIOINBEGIN pVRDEAudioBegin)
657	{
658	AssertPtrReturn(pvContext, VERR_INVALID_POINTER);
659	AssertPtrReturn(pVRDEAudioBegin, VERR_INVALID_POINTER);
660
661	PVRDESTREAM pVRDEStrmIn = (PVRDESTREAM)pvContext;
662	AssertPtrReturn(pVRDEStrmIn, VERR_INVALID_POINTER);
663
664	VRDEAUDIOFORMAT audioFmt = pVRDEAudioBegin->fmt;
665
666	int iSampleHz = VRDE_AUDIO_FMT_SAMPLE_FREQ(audioFmt); RT_NOREF(iSampleHz);
667	int cChannels = VRDE_AUDIO_FMT_CHANNELS(audioFmt); RT_NOREF(cChannels);
668	int cBits = VRDE_AUDIO_FMT_BITS_PER_SAMPLE(audioFmt); RT_NOREF(cBits);
669	bool fUnsigned = VRDE_AUDIO_FMT_SIGNED(audioFmt); RT_NOREF(fUnsigned);
670
671	LogFlowFunc(("cbSample=%RU32, iSampleHz=%d, cChannels=%d, cBits=%d, fUnsigned=%RTbool\n",
672	VRDE_AUDIO_FMT_BYTES_PER_SAMPLE(audioFmt), iSampleHz, cChannels, cBits, fUnsigned));
673
674	return VINF_SUCCESS;
675	}
676
677
678	int AudioVRDE::onVRDEInputData(void pvContext, const void pvData, uint32_t cbData)
679	{
680	PVRDESTREAM pStreamVRDE = (PVRDESTREAM)pvContext;
681	AssertPtrReturn(pStreamVRDE, VERR_INVALID_POINTER);
682
683	void *pvBuf;
684	size_t cbBuf;
685
686	RTCircBufAcquireWriteBlock(pStreamVRDE->In.pCircBuf, cbData, &pvBuf, &cbBuf);
687
688	if (cbBuf)
689	memcpy(pvBuf, pvData, cbBuf);
690
691	RTCircBufReleaseWriteBlock(pStreamVRDE->In.pCircBuf, cbBuf);
692
693	if (cbBuf < cbData)
694	LogRel(("VRDE: Capturing audio data lost %zu bytes\n", cbData - cbBuf)); /** @todo Use an error counter. */
695
696	return VINF_SUCCESS; /** @todo r=andy How to tell the caller if we were not able to handle all input data? */
697	}
698
699
700	int AudioVRDE::onVRDEInputEnd(void *pvContext)
701	{
702	RT_NOREF(pvContext);
703
704	return VINF_SUCCESS;
705	}
706
707
708	int AudioVRDE::onVRDEInputIntercept(bool fEnabled)
709	{
710	RT_NOREF(fEnabled);
711	return VINF_SUCCESS; /* Never veto. */
712	}
713
714
715	/**
716	* Construct a VRDE audio driver instance.
717	*
718	* @copydoc FNPDMDRVCONSTRUCT
719	*/
720	/* static */
721	DECLCALLBACK(int) AudioVRDE::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
722	{
723	RT_NOREF(fFlags);
724
725	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
726	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
727
728	AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
729	AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
730
731	LogRel(("Audio: Initializing VRDE driver\n"));
732	LogFlowFunc(("fFlags=0x%x\n", fFlags));
733
734	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
735	("Configuration error: Not possible to attach anything to this driver!\n"),
736	VERR_PDM_DRVINS_NO_ATTACH);
737
738	/*
739	* Init the static parts.
740	*/
741	pThis->pDrvIns = pDrvIns;
742	/* IBase */
743	pDrvIns->IBase.pfnQueryInterface = drvAudioVRDEQueryInterface;
744	/* IHostAudio */
745	PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvAudioVRDE);
746
747	/*
748	* Get the ConsoleVRDPServer object pointer.
749	*/
750	void *pvUser;
751	int rc = CFGMR3QueryPtr(pCfg, "ObjectVRDPServer", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
752	AssertMsgRCReturn(rc, ("Confguration error: No/bad \"ObjectVRDPServer\" value, rc=%Rrc\n", rc), rc);
753
754	/* CFGM tree saves the pointer to ConsoleVRDPServer in the Object node of AudioVRDE. */
755	pThis->pConsoleVRDPServer = (ConsoleVRDPServer *)pvUser;
756	pThis->cClients = 0;
757
758	/*
759	* Get the AudioVRDE object pointer.
760	*/
761	pvUser = NULL;
762	rc = CFGMR3QueryPtr(pCfg, "Object", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
763	AssertMsgRCReturn(rc, ("Confguration error: No/bad \"Object\" value, rc=%Rrc\n", rc), rc);
764
765	pThis->pAudioVRDE = (AudioVRDE *)pvUser;
766	pThis->pAudioVRDE->mpDrv = pThis;
767
768	/*
769	* Get the interface for the above driver (DrvAudio) to make mixer/conversion calls.
770	* Described in CFGM tree.
771	*/
772	pThis->pDrvAudio = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIAUDIOCONNECTOR);
773	AssertMsgReturn(pThis->pDrvAudio, ("Configuration error: No upper interface specified!\n"), VERR_PDM_MISSING_INTERFACE_ABOVE);
774
775	return VINF_SUCCESS;
776	}
777
778
779	/**
780	* @interface_method_impl{PDMDRVREG,pfnDestruct}
781	*/
782	/* static */
783	DECLCALLBACK(void) AudioVRDE::drvDestruct(PPDMDRVINS pDrvIns)
784	{
785	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
786	PDRVAUDIOVRDE pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVRDE);
787	LogFlowFuncEnter();
788
789	/*
790	* If the AudioVRDE object is still alive, we must clear it's reference to
791	* us since we'll be invalid when we return from this method.
792	*/
793	if (pThis->pAudioVRDE)
794	{
795	pThis->pAudioVRDE->mpDrv = NULL;
796	pThis->pAudioVRDE = NULL;
797	}
798	}
799
800	/**
801	* @interface_method_impl{PDMDRVREG,pfnAttach}
802	*/
803	/* static */
804	DECLCALLBACK(int) AudioVRDE::drvAttach(PPDMDRVINS pDrvIns, uint32_t fFlags)
805	{
806	RT_NOREF(pDrvIns, fFlags);
807
808	LogFlowFuncEnter();
809
810	return VINF_SUCCESS;
811	}
812
813	/**
814	* @interface_method_impl{PDMDRVREG,pfnDetach}
815	*/
816	/* static */
817	DECLCALLBACK(void) AudioVRDE::drvDetach(PPDMDRVINS pDrvIns, uint32_t fFlags)
818	{
819	RT_NOREF(pDrvIns, fFlags);
820
821	LogFlowFuncEnter();
822	}
823
824
825	/**
826	* VRDE audio driver registration record.
827	*/
828	const PDMDRVREG AudioVRDE::DrvReg =
829	{
830	PDM_DRVREG_VERSION,
831	/* szName */
832	"AudioVRDE",
833	/* szRCMod */
834	"",
835	/* szR0Mod */
836	"",
837	/* pszDescription */
838	"Audio driver for VRDE backend",
839	/* fFlags */
840	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
841	/* fClass. */
842	PDM_DRVREG_CLASS_AUDIO,
843	/* cMaxInstances */
844	~0U,
845	/* cbInstance */
846	sizeof(DRVAUDIOVRDE),
847	/* pfnConstruct */
848	AudioVRDE::drvConstruct,
849	/* pfnDestruct */
850	AudioVRDE::drvDestruct,
851	/* pfnRelocate */
852	NULL,
853	/* pfnIOCtl */
854	NULL,
855	/* pfnPowerOn */
856	NULL,
857	/* pfnReset */
858	NULL,
859	/* pfnSuspend */
860	NULL,
861	/* pfnResume */
862	NULL,
863	/* pfnAttach */
864	AudioVRDE::drvAttach,
865	/* pfnDetach */
866	AudioVRDE::drvDetach,
867	/* pfnPowerOff */
868	NULL,
869	/* pfnSoftReset */
870	NULL,
871	/* u32EndVersion */
872	PDM_DRVREG_VERSION
873	};
874

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source: vbox/trunk/src/VBox/Main/src-client/DrvAudioVRDE.cpp@ 73471

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